/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.msq.test;

import org.apache.calcite.sql.type.SqlTypeName;
import org.apache.druid.msq.exec.QueryListener;
import org.apache.druid.msq.indexing.report.MSQResultsReport;
import org.apache.druid.msq.indexing.report.MSQTaskReportPayload;

import javax.annotation.Nullable;
import java.util.List;

public class NoopQueryListener implements QueryListener
{
  @Override
  public boolean readResults()
  {
    return false;
  }

  @Override
  public void onResultsStart(List<MSQResultsReport.ColumnAndType> signature, @Nullable List<SqlTypeName> sqlTypeNames)
  {
    // Do nothing.
  }

  @Override
  public boolean onResultRow(Object[] row)
  {
    return true;
  }

  @Override
  public void onResultsComplete()
  {
    // Do nothing.
  }

  @Override
  public void onQueryComplete(MSQTaskReportPayload report)
  {
    // Do nothing.
  }
}
